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Sheldon feels lost after one of his favorite TV shows gets canceled too soon and Amy tries to help him get over his compulsive need for closure. Meanwhile, Raj discovers a secret about his new love interest, Lucy.

Sheldon has Penny as a guest on a "Fun with Flags" episode and she gets him to attend her acting class' presentation of "A Streetcar Named Desire". Raj drops out after Lucy unexpectedly leaves their first get together.

After an aborted girls' trip to Vegas, they are all playing Dungeons and Dragons together. Raj leaves after he finds that Lucy is free and he pushes her to do things that scare her. In the game, Penny casts a love spell on Sheldon and Amy's characters which gets Amy very upset because they are treating her and Sheldon's relationship as a joke.moreless

The couples are getting for Valentines' Day. Leonard, Penny, Howard and Bernadette are going to dinner. Sheldon and Amy are trying to get the perfect gifts for each other. Raj and Stuart are planning a singles only party at The Comic Book Store.

Leonard gets a new job opportunity to work abroad for the summer and Sheldon is feeling a little bit jealous. Meanwhile, Raj tries to move his relationship with Lucy into a new direction by introducing her to his friends, but he fears that she may not like them.

Raj and Lucy have their first date meeting in a library and texting to each other. The guys have to promote science careers for women at Howard's old middle school, while the girls go to Disneyland and get made up as Disney Princesses.

Bernadette prepares a dinner for the gang, however Sheldon brings his own Thai take-out food after she makes Sheldon's Thai food from scratch. Sheldon rearranges Howard and Bernadette's closet and finds an unopened letter from Howard's father, sent for his 18th birthday. Penny and Leonard decide to invite the gang for a formal dinner party instead of just ordering take-out food.moreless

The guys have a road trip in order to attend to a comic book convention, dressed as "Star Trek: The Next Generation". Stopping to take some photos in costume, Leonard's car is stolen. Meanwhile the girls are at home trying to figure out a comic book.

Howards's nerd hobby gets him into money troubles. Sheldon is forced to work with Kripke while in competition with Kripke, ends up spreading rumors about his sexual relationship with Amy. Howard and Raj get action figures of themselves that cost 1000$.

Howard and Bernadette have a tense dinner with both of her parents. The subject of Mr. Rostenkowski's weekend fishing trip comes up and Howard is hooked into going with him. The guys visit Penny to learn all about fishing since she used to go with her dad. Sheldon shows up at Amy's apartment to find his girlfriend sick. After intitially rejecting her request, Sheldon stays to take care of Amy the way his mother took care of him, sometimes a bit initimately.moreless

Guys plan to play Dungeons and Dragons, but girls are not invited, which causes arguments among them and the girls. After playing for some time at the apartment, the girls show up dressed sexily for a girls' night out and Raj goes with them to the nightclub. After striking out with a woman at the bar, Amy and Raj get to know each other better.moreless

With Leonard mad at Sheldon, he moves in with Penny. Amy notes that she would be the perfect roommate for Sheldon since she knows him so well and he wouldn't have to break in someone else. Sheldon and Penny are not happy with these arrangements. Raj is trapped in the Wolowitz house with Howard's lonely mother.moreless

Howard prepares to finally move out of his mother's house and in with Bernadette but it proves to be kind of difficult. Amy gets mad at Sheldon for taking Wil Wheaton's side and not hers, so he turns to Penny for advice.

Sheldon hires an assistant. Amy gets incredibly jealous of Sheldon having a female assistant, but Alex is actually more interested in Leonard. Meanwhile, Wolowitz' return from space has been delayed a week and he starts to lose his mind because of it.

Competition between the guys increases when a slot for a tenured professor opens up and they start to schmooze the tenure committee members that include Mrs. Davies from Human Resources who Sheldon has crossed paths with before.

Taking leaps from the start of the season, this episode showcases the heights of Sheldon's eccentricity and his state of friendship with Stephen Hawking. Penny treading the community college road. Leonard being absolutely crazy about Penny's educational chosen path. Raj coming out of his introvert shell and giving a taste of his wit and Howard giving his insight on the current happenings with a Stephen Hawking impersonation and doing his Indian Guy accent.moreless

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